Motion-picture-projecting machine



March 1 1927.

J. FAlT MOTION Fromm: PROJECTING MACHINE Filed May 13. 1926 2 Sheets-Sheet 1 Jafzrzi I I QZZINVENTOR.

ATTORNEY.

Patented Mar. l, 1927.

. UNITED STATES JOHN FATE, OF GLENBURNIE, MARYLAND.

MorIoN-rIcrURE-rnoJEcrING MACHINE.

Application filed ma 13, 1926. Serial 1%. 108,867.

This invention relates to motion icture projectingmachines, more particular y to a fire extinguishing attachment therefor and has for its objectto' provide, in a manner as 5 hereinafter set forth, a combined fire confining and film guide means positioned exteriorly of the projecting mechanism housing and the upper and lower film magazines, as well as communicating therewith, and acting inthe event of the film catching on fire within the projecting mechanism housing to con fine the fire therein and to the comparatively small portion of the film positioned in such housing, thereby preventing the fire from reaching the main body of the film housed in the upper or in the lower or in both of the film magazines to prevent the destruction of the main body of the film, and as only a small portion of the film has been destroyed, the film can be readily repaired, and used again.

Further objects of the invention are to provide, in the manner as hereinafter set forth, a fire extinguishing attachment for the purpose referred to, which is simple in its construction and arrangement, strong, durable, thoroughly eificient in its use, readily installed with respect to the well known forms of motion picture projecting machines now employed, and comparatively inexpensive to manufacture.

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of the claims hereunto appended.

In the drawings wherein like reference characters denote corresponding parts throughout the several views:

Figure 1 is a fragmentary view, in elevation, of a motion picture projecting machine showin the adaptation therewith of a fire extingulshing attachment in accordance with this invention.

Figure 2 is a longitudinal sectional view of one of the combined fire confining and film guide means of the attachment and which is employed in connection with theupper film magazine and projecting mechanism housing.

Figure 3 is a section on line 3-3, Figure 2.

. Figure 4 is a cross sectional view of the structure on line 4-4 Figure 2. v A fire extinguishing attachmentfor the purpose referred to and in accordance with this invention includes a pair of superposed and oppositely disposed combined fire conelement. The upper element communicateswith the upper film magazine and the projecting mechanism-housing and the lower element communicates with the rojecting mechanism housing and the lower film magazine.-

Referring to the drawings in detail 1 denotes the upper film magazine, 2 the lower film magazine and 3the projecting mechanism housing of the well known form, of motion picture projecting. machine now in general use. The outlet opening for the film in the body portion of the magazine 1 and which is indicated at 4 is closed by a plate 5. The inlet opening formed in the body of the lower magazine 2 and which is indicated at 6 is closed by a plate 7. The body portion of the upper magazine 1 is formed with a film outletopening which is indicated at 8 and the body portion of the magazine 2 is formed with a film inlet opening and which is indicated at 9. The change in construction of the ordinary forms of film magazines 1 and 2 resides solely in closing the openings or passages 4 and 6 and the providing of the wall or body portion ofthe said magazines with the openings 8 and 9. The opening 8 is positioned in the lower part of the magazine 1 and the opening 9 is positioned in the upper part of the magazine 2. The openings 8 and 9 are arranged forwardly with respect to the housing 3. In the ordinary form of motion picture machines the film passes from the magazine 1, through the opening 4 into the housing 3 and from the latter through the opening 6 into the magazine 2. When employing the fire extinguishing attachment in accordance with this invention drawn from the housing 3 through an opening formed in the lower part of the front thereof. The differences in construction be: tween the form of housing now employed in motion picture machines so as to adapt such housing 3 with respect to a fire extinguishing attachment in accordance with this invention resides solely in the providing of the entrance opening for the film at the upper end of the front of the housing 3 and the outlet opening for the film at the lower part of the front of the housing 3. The intake opening formed in the upper part of the front of the housing 3 is indicated at 10 and the outlet opening formed in the lower part of the housing 3 is indicated at 11.

The upper combined fire confining and film guide element of the attachment is referred to generally by the reference character 12 and the lower combined fire confining and film guide element of the attachment is indicated generally by the reference character 13.

Each of the said elements includes an inner lengthwise extending wall 14, an outer len thwise extending wall 15, an outer end wal 16 a fixed side wall 17 and a hinged side wall 18. The inner end of the casing which is provided by the walls 14, 15, 16, 17 and 18 is open as indicated at 19. The casing provides a chamber 20 for the reception of a series of pairs of combined fire resisting and film guide rollers. The outer end of the wall 14 is. provided with a laterally extending lug 21 formed with an opening 22. The wall 14 conforms in contour to the shape of the body of the magazine, that is either one of the magazines, and as shown as each magazine is of circular contour the wall 14 is disposed upon an arc and the lug 21 forms a continuation of such are. The wall 15 opposes and is of a contour similar to the contour of the wall 14 and said wall 15 at its inner end is provided with an angularly disposed lug 23 provided with an opening 24.- The wall 14 in proximity to its outer end is provided with a transverse slot 25 for a purpose to be presently referred to.

The wall 17 has its inner face formed a series of spaced webs 26, 27 and 28 and each of which is disposed transversely with respect to the inner face of the wall 17 and formed with a lengthwise extending oval shaped slot 29. The webs 26, 27, 28 are also formed integral with the inner face of the wall 14. The web 28 is positioned adjacent the slot 25. The inner face of the wall 17 is furthermore provided with a series of spaced bosses 30, 31 and 32 and each of which is formed with'a socket 33. The boss 30 opposes the web 26 and is spaced therefrom. The boss 31 opposes the web 27 and and bosses. Formed integral with the inner face of the wall 15 and opposing the rib 34 is a lengthwise extending rib 39 formed with a series of spaced protuberances 40, 41 and 42 and each of which is formed with an opening 43. The protuberance 35 opposes the protuberance 40 and is spaced therefrom. The protuberance 36 opposes the protuberance 41 and is spaced therefrom and the protuberance 37 opposes the protuberance 42 and is spaced therefrom.

The protuberances 35, 36, and 37 are alined with the webs 26, 27 and 28. The protuberances 40, 41 and 42 aline with the bosses .30, 31 and 32. The slots 29 and the protuberances26, 27 and 28 aline with the slots 38 formed in the protuberances 40, 41 and 42... The sockets 33 in the bosses 30, 31 and 32 aline with the openings 43 formed in the protuberances 40, 41 and 42. Mounted in each pair of alining slots is a guide roller shaft 44 and mounted in each pair of alining openings is a guide roller shaft 45. The guide roller carried by the shaft 44 is indicated at 46 and the guide roller carried by the shaft 45 is indicated at 47. The guide roller shaft extends through its respective guide roller and threadedly engages therewith as at 48. The guide roller shafts are of greater length than the length of the guide rollers 50 as to provide for the mounting of the projectingends of said shafts in the slots 29 and sockets 33. The guide rollers 46 are gravity movable and of greater ,weight than their respective shafts so that such shafts will be held at the lower ends of the slots 29. The gravity action of the rollers 46 will hold the film against the rollers 47, but the weight of the rollers 46 will not prevent the feeding movement of the film. The guide rollers .46 and 47 are arranged in close proximity to each other so as to engage the film 48 as it travels to- .wards or from the housing 3. Each guide roller shaft is provided with a groove at one end as indicated at 49 to facilitate the connecting of the same with its respective guide roller. The wall 18 is hinged, as at 50, to the wall 15 intermediate the ends thereof, and said wall 18 is provided with a latching device 51 for detachably securing it in closed position. The latching device engages over the rib 39.

When the element 12 is arranged in posiextend through the lugs 20 and 23 and en- .in the front wall of the housin gage with the magazine 1 and housing 3 for fixedly securingsaid element 12 in position. When the element 12 is secured in position the slot 25 thereof registers with the opening 8' formed in the bod magazine 1 and the open end 17 o the element 12 surrounds the openin 10 formed 3. The film 48. passes between the pairs 0 the guide rollers of the element 12, through the opening 10 and into the housing 3.

When the element .13 is arranged in posi-.

tion, it abuts against the front wall of the housing 3 and the upper portion of the body of the magazine 2. Hold fast devices 53 extend through the lugs 21 and 23 of the element 13 and en age in the front wall of the housing 3 and 't e upper part of the body of the magazine 2 for fixedly securing. the element 13 in position. When the element 13 is secured in position the slot 25 thereof registers with the opening 9 formed in the body .of the magazine and the open end 17 of the element 13 surrounds the opening 11 formed in the front wall of the housing '3 and when in such position the film passes through the opening 11, between the guide rollers of the element 13 and through the opening 19 into the lower magazine 2.

When the elements 12 and 13 are in the position as shown, and the film within the ousing 3 has caught fire, the pairs of gui e rollers within the elements 12 and 13 Wlll arrest passage of the flame to the magazines '1 and 2 under such conditions confining the fire within the housing 3 and prevent the burning of the main body of the film which is stored within the magazine 1 or magazine 2 or in both of said magazines.

The attachment can be set up in operative position with respect to the form of motion picture projecting machines now in general use with but a small change in the latter and at a minimum expense, and the attachment provides means as a safeguard to prevent the destruction of the main body of the film and therefore it is thought the many advantages of a fire extin 'shing attachment, in accordance with ifiii s invention can be readily understood, and although the preferred embodiment of the invention is as illustrated of the and described, yet it is to be understood that changes in the details of construction can be had which will fall within the scope of the invention as claimed.

What I claim is:

1-. In a fire extinguishing attachment for motion picture machines a casing adapted to be secured to andexteriorly of a film magazine and the projecting mechanism of the machine, slotted webs within said casing, socketed bosses within the casing and oppos ing and spaced from said webs, slotted rotuberances within the casing and spaced rom the slotted webs, apertured protuberances within the casing and opposing and spaced from said slotted protuberances and further opposing and spaced from said socketed bosses, guide rollers journaled in. saidslotted .webs and slotted protuberances, guide rollers journaled in said socketed bosses and apertured protuberances, the guide rollers journaled in the slotted webs and protuberances o posing the guide rollers journaled in the soc eted bosses and apertured rotuberances and arranged in close proximity therewith, and said casing provided with means for the passage of film therethrough between I the housin and the film magazine.

2. In a re extinguishing attachment for motion picture machines, a casing adapted to be secured to and exteriorly of a film magazine and the projecting mechanism of the machine, slotted webs within said casing, socketed bosses within the casing and opposing and spaced from said webs, slotted pro- .tuberances within the casing and spaced from the slotted webs, apertured protuberances within the casing and o posing and spaced from said slotted protu rances and further opposing and spaced from said socketed bosses, guide rollers journaled in said slotted webs and slotted protuberances, guide rollers journaled in said socketed bossesand apertured protuberances, the guide rollers journaled in the slotted webs and protuberances o posing the guide rollers journaled in the soc eted bosses and apertured protuberances and arranged in close proximity therewith, said casing provided with means for the passage of film therethrough between the housing and the film magazine, and said casing provided with means to permit of access thereto to permit of the-threading of the film between the opposed guide rollers.

In testimony whereof, I afiix my signature hereto. 7

JOHN FAIT. 

